Optical Measuring Device

ABSTRACT

An optical measuring device includes at least one optical sensor configured for optical capture of at least one measurement object at multiple image recording positions. The optical measuring device includes at least one display device configured to display, for multiple predetermined and/or determinable image recording positions, in each case a schematic representation of an image to be recorded at the respective image recording position. The optical measuring device includes at least one data processing unit and at least one interface. The interface is configured to provide at least one item of manipulation information to the data processing unit. The data processing unit is configured to, based on the manipulation information, adapt at least one of the image recording position and an image recording parameter of at least one of the images to be recorded.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to European Patent Application No. 20160 870.0 filed Mar. 4, 2020. The entire disclosure of the applicationreferenced above is incorporated by reference.

FIELD

The invention relates to an optical measuring device, a device fordimensional measurement of a measurement object, a method for creating ameasurement program, and a test method for determining at least onedimensional property of a measurement object. The present inventionrelates in particular to the field of coordinate measuring technology,in particular coordinate measuring machines for optically measuring ameasurement object.

BACKGROUND

Various methods for optically measuring a measurement object are knownfrom the prior art. An optical sensor is used in such methods. Theoptical sensor can be moved relative to the measurement object for thepurpose of recording images of the measurement object. The movement canbe controlled manually or automatically, for example.

The images of the measurement object can be recorded at different imagerecording positions. For example, the digital microscope Smartzoom 5from ZEISS can visualize schematic representations of anticipated imagerecording positions before the actual measurement. For the setting of aregion to be covered with the images that is desired by the user, theuser can alter as a whole a region to be covered by the images. Imagerecording parameters of individual images, such as zoom, are defined asthey are created, and are fixed and identical for all the images.

By way of example, for tactile sensors, an automatic test plan can becreated using the CALYPSO® software from ZEISS. In CALYPSO®, for certainmeasurement strategies, individual probe points can be visualized andmanipulated by the user. In CALYPSO®, the measurement points aremanipulated directly and the measurement strategy is thus alteredautomatically. The manipulation of each individual measurement point ispossible moreover only with the use of a measurement strategy consistingof individual probe probes; this is not possible with the use of, forexample, a circular path or a polyline. Only certain support points canbe manipulated here.

The background description provided here is for the purpose of generallypresenting the context of the disclosure. Work of the presently namedinventors, to the extent it is described in this background section, aswell as aspects of the description that may not otherwise qualify asprior art at the time of filing, are neither expressly nor impliedlyadmitted as prior art against the present disclosure.

SUMMARY

It is therefore an object of the present invention to provide an opticalmeasuring device, a device for dimensional measurement of a measurementobject, a method for creating a measurement program and a test methodwhich at least largely avoid the disadvantages of known devices andmethods. In particular, user-adaptable and thereby improved imagerecording is intended to be made possible.

This object is achieved by means of a device and a method having thefeatures of the independent patent claims. Preferred configurations,which can be realized individually or in combination, are presented inthe dependent claims.

Hereinafter the terms “exhibit,” “have,” “comprise” or “include” or anygrammatical deviations therefrom are used in a non-exclusive way.Accordingly these terms can refer either to situations in which, besidesthe features introduced by these terms, no further features are present,or to situations in which one or more further features are present. Forexample, the expression “A exhibits B,” “A has B,” “A comprises B” or “Aincludes B” can refer both to the situation in which no further elementaside from B is provided in A (that is to say to a situation in which Aconsists exclusively of B) and to the situation in which, in addition toB, one or more further elements are provided in A, for example elementC, elements C and D, or even further elements.

Furthermore, it is pointed out that the terms “at least one” and “one ormore” and grammatical modifications of these terms, if they are used inassociation with one or more elements or features and are intended toexpress the fact that the element or feature can be provided singly ormultiply, in general are used only once, for example when the feature orelement is introduced for the first time. When the feature or element issubsequently mentioned again, the corresponding term “at least one” or“one or more” is generally no longer used, without restriction of thepossibility that the feature or element can be provided singly ormultiply.

Furthermore, hereinafter the terms “preferably,” “in particular,” “byway of example” or similar terms are used in conjunction with optionalfeatures, without alternative embodiments thereby being restricted. Inthis regard, features introduced by these terms are optional features,and there is no intention to restrict the scope of protection of theclaims, and in particular of the independent claims, by these features.In this regard, the invention, as will be recognized by a person skilledin the art, can also be carried out using other configurations.Similarly, features introduced by “in one embodiment of the invention”or by “in one example embodiment of the invention” are understood asoptional features, without alternative configurations or the scope ofprotection of the independent claims thereby being intended to berestricted. Furthermore, all possibilities of combining the featuresintroduced by these introductory expressions with other features,whether optional or non-optional features, are intended to remainunaffected by the introductory expressions.

The phrase at least one of A, B, and C should be construed to mean alogical (A OR B OR C), using a non-exclusive logical OR, and should notbe construed to mean “at least one of A, at least one of B, and at leastone of C.”

In a first aspect of the present invention, an optical measuring deviceis proposed.

The optical measuring device comprises: at least one optical sensorconfigured for optical capture of at least one measurement object at aplurality of image recording positions; at least one display deviceconfigured to display for a plurality of predetermined and/ordeterminable image recording positions in each case a schematicrepresentation of an image to be recorded at the respective imagerecording position; at least one data processing unit and at least oneinterface, wherein the interface is configured to provide at least oneitem of manipulation information to the data processing unit, whereinthe data processing unit is configured to adapt the image recordingposition and/or at least one image recording parameter of at least oneof the images to be recorded depending on the manipulation information.

The term “optical measuring device” as used here is a broad term whichis intended to be accorded its customary and familiar meaning asunderstood by a person skilled in the art. The term is not restricted toa specific or adapted meaning. The term can refer, without restriction,in particular to any device comprising at least one optical sensorsystem, in particular at least one optical sensor.

The term “optical sensor” as used here is a broad term which is intendedto be accorded its customary and familiar meaning as understood by aperson skilled in the art. The term is not restricted to a specific oradapted meaning. The term can refer, without restriction, in particularto a sensor configured to generate an imaging, also called image, of ameasurement object. The optical sensor can be a two- orthree-dimensional optical sensor. By way of example, thethree-dimensional optical sensor could comprise at least onetime-of-flight sensor (ToF). By way of example, the optical sensor canbe a two-dimensional image sensor. The optical sensor can comprise atleast one camera sensor, for example at least one CCD camera. Theoptical sensor is configured for optical capture of at least onemeasurement object. The term “optical capture” as used here is a broadterm which is intended to be accorded its customary and familiar meaningas understood by a person skilled in the art. The term is not restrictedto a specific or adapted meaning. The term can refer, withoutrestriction, in particular to recording an image of the measurementobject or of a part of the measurement object. An “image” can beunderstood to mean an imaging of the measurement object that is capturedby the optical sensor.

The optical measuring device can comprise at least one evaluation unitconfigured to evaluate the recorded image. The evaluation can comprisedetermining a position of at least one measurement point relative to areference coordinate system. The evaluation unit can comprise at leastone data processing unit, for example at least one computer ormicrocontroller. The data processing unit can have one or more volatileand/or non-volatile data memories, wherein the data processing unit canbe configured for example in terms of programming to evaluate the image.The evaluation unit can furthermore comprise at least one interface, forexample an electronic interface and/or a human-machine interface suchas, for example, an input/output device such as a display and/or akeyboard. By way of example, one or more electronic connections betweenthe optical sensor and the evaluation unit can be provided.

The term “image recording position” as used here is a broad term whichis intended to be accorded its customary and familiar meaning asunderstood by a person skilled in the art. The term is not restricted toa specific or adapted meaning. The term can refer, without restriction,in particular to a position of the optical sensor at the time of imagerecording. The position can comprise a spatial position, in particular athree-dimensional point (x, y, z) in a coordinate system, and/or anorientation of the optical sensor. The orientation can be specified byat least three angles, for example an Euler angle or inclination angle,a roll angle and a yaw angle.

The term “image recording parameter” as used here is a broad term whichis intended to be accorded its customary and familiar meaning asunderstood by a person skilled in the art. The term is not restricted toa specific or adapted meaning. The term can refer, without restriction,in particular to an arbitrary property and/or a feature of the imageand/or a setting of the optical sensor and/or of a further component ofthe optical measuring device, such as a lens. The image recordingparameter can comprise at least one parameter selected from the groupconsisting of: size, scaling, translation, rotation, torsion. Suchparameters can be determined by settings of the optical sensor and/or ofa further component of the optical measuring device, such as a lens, forexample a zoom setting. The image recording parameter can comprise atleast one parameter of at least one setting such as an illuminationcontrol, for example of a bright field, dark field, transmitted-lightand/or coaxial illumination, and/or of a camera such as, for example,exposure time and/or aperture setting. The image recording parameterscan also comprise settings of further constituent parts, connected to acontrol unit, for example of the coordinate measuring machine, such as,for example, an illumination control, for example bright field, darkfield, transmitted-light and/or coaxial illumination, and cameraparameters such as, for example, exposure time and aperture setting.

The term “measurement object” as used here is a broad term which isintended to be accorded its customary and familiar meaning as understoodby a person skilled in the art. The term is not restricted to a specificor adapted meaning. The term can refer, without restriction, inparticular to an arbitrarily shaped object to be measured. By way ofexample, the measurement object can be selected from the groupconsisting of a test object, a workpiece, and a component to bemeasured. By way of example, the measurement object can be a planarmeasurement object, for example having an extensive surface.

The optical measuring device can be configured to determine and/or tocheck at least one test feature of the measurement object. The term“test feature” as used here is a broad term which is intended to beaccorded its customary and familiar meaning as understood by a personskilled in the art. The term is not restricted to a specific or adaptedmeaning. The term can refer, without restriction, in particular to afeature that is to be determined and/or to be checked and/or to betested of at least one measurement element. Determining and/or checkingcan comprise determining and/or checking dimensional deviations and/orshape deviations and/or positional deviations. The test feature can be afeature selected from the group consisting of: at least one length; atleast one angular dimension, at least one surface parameter, a shape, aposition. The term “measurement element” as used here is a broad termwhich is intended to be accorded its customary and familiar meaning asunderstood by a person skilled in the art. The term is not restricted toa specific or adapted meaning. The term can refer, without restriction,in particular to a predetermined or predeterminable geometric element.The measurement element can be for example a geometric element selectedfrom the group consisting of a circle, a cylinder, a rectangle, astraight line or another element with a regular geometry. The testfeature can be determined and/or checked for example by measuring pointsand/or lines and/or areas of the measurement object. The opticalmeasuring device can be configured to record a plurality of images atdifferent image recording positions for the purpose of determiningand/or checking the test feature. The recorded images can be evaluatedby the evaluation unit and in each case at least one measurement pointcan be determined.

The test feature can be determined and/or checked using a measurementstrategy. The term “measurement strategy” as used here is a broad termwhich is intended to be accorded its customary and familiar meaning asunderstood by a person skilled in the art. The term is not restricted toa specific or adapted meaning. The term can refer, without restriction,in particular to an instruction for achieving a measurement task. Themeasurement strategy comprises at least one capture strategy whichdetermines the image recording, in particular image recording positions.

The measurement strategy can be defined by a user of the opticalmeasuring device. The measurement strategy can be determinable via theinterface of the optical measuring device. By way of example, theinterface can be a human-machine interface and the measurement strategycan be determined via the human-machine interface. Prior to themeasurement the user can determine a measurement element, for example byselecting a measurement element from a database, and define themeasurement strategy.

The optical measuring device can be configured to determine the imagerecording positions depending on the measurement strategy. The imagerecording position can be an image recording position that ispreprogramed for a chosen measurement strategy. The optical measuringdevice, in particular the data processing unit or a further processor ofthe optical measuring device, can be configured to execute an algorithmfor determining the image recording positions in order to be able toimplement the chosen measurement strategy. Alternatively, the opticalmeasuring device can be configured to the effect that the userhimself/herself can choose the image recording positions. The imagerecording positions can be able to be input via the interface.“Predetermined and/or determinable image recording positions” can beunderstood to mean image recording positions determined by the algorithmor image recording positions input by the user.

A relative position of the optical sensor and of the measurement objectcan be adjustable. By way of example, a multiplicity of relativepositions of the optical sensor and of the measurement object can beadjustable for the purpose of recording the plurality of measurementpoints. By way of example, the optical sensor can be moveable, forexample in at least three spatial directions. By way of example, theoptical sensor can be displaceable and the measurement object can lie ona fixed or moveable support. Embodiments with a fixed optical sensor arealso conceivable, wherein the measurement object can then be displacedin these embodiments.

A relative movement of optical sensor and measurement object can becontrolled by an apparatus controller of the optical measuring deviceand/or an external apparatus controller. The relative movement ofoptical sensor and measurement object can be determined by a measurementprogram. By way of example, a measurement program that can be convertedinto control commands for the apparatus controller can be provided for ameasurement of the measurement object. The measurement program can bedependent on the measurement strategy, the measurement element and thetest feature to be determined and/or to be tested.

The apparatus controller can comprise at least one data processing unit,for example at least one computer or microcontroller. The dataprocessing unit can have one or more volatile and/or non-volatile datamemories, wherein the data processing unit can be configured for examplein terms of programming to control the optical sensor. The apparatuscontroller can furthermore comprise at least one interface, for examplean electronic interface and/or a human-machine interface such as, forexample, an input/output device such as a display and/or a keyboard. Byway of example, one or more electronic connections between the opticalsensor and the apparatus controller can be provided.

The term “display device” as used here is a broad term which is intendedto be accorded its customary and familiar meaning as understood by aperson skilled in the art. The term is not restricted to a specific oradapted meaning. The term can refer, without restriction, in particularto any device for optical visualization. The display device can comprisefor example a display and/or a monitor and/or an augmented reality (AR)device and/or a virtual reality (VR) device.

The term “schematic representation” as used here is a broad term whichis intended to be accorded its customary and familiar meaning asunderstood by a person skilled in the art. The term is not restricted toa specific or adapted meaning. The term can refer, without restriction,in particular to in principle any visualization of the image to berecorded. The schematic representation can be a representation of animage calculated, in particular by the data processing unit. Theschematic representation can be for example a frame and/or a contourand/or outline of the image. The schematic representation can be suchthat the respective image recording position defines the center point ofthe schematic representation. The display device can be configured todisplay the schematic representation positionally correctly.“Positionally correctly” can be understood to mean that the schematicrepresentation correctly represents position and orientation of theimage to be recorded, in particular relative to a reference systemand/or a reference element. The display device can be configured todisplay the schematic representation of the images to be recordedschematically with a representation of a measurement space and/or with arepresentation of the measurement object and/or with a representation ofa measurement element. By way of example, the optical sensor and/or afurther image sensor of the optical measuring device can be configuredto record an overview image of the measurement space and/or of themeasurement object. The display device can be configured to superimposethe schematic representation on the overview image. By way of example, ameasurement task might consist in images of objects in the measurementspace being intended to be produced, in particular for documentationpurposes. The images can be produced at different image recordingpositions, which can be visualized by the display device as a schematicrepresentation and can be manipulated by the user.

The term “data processing unit” as used here is a broad term which isintended to be accorded its customary and familiar meaning as understoodby a person skilled in the art. The term is not restricted to a specificor adapted meaning. The term can refer, without restriction, inparticular to an arbitrary logic circuit, for performing basicoperations of a computer or system, and/or generally to a deviceconfigured to perform calculations or logic operations. The dataprocessing unit can comprise a processor or a processor unit. The dataprocessing unit can comprise at least one microprocessor. The dataprocessing unit can have for example an arithmetic-logic unit (ALU), afloating-point unit (FPU), such as a mathematical coprocessor ornumerical coprocessor, a plurality of registers and a main memory, forexample a cache main memory. The data processing unit can comprise amulticore processor. The data processing unit can comprise a centralprocessing unit (CPU). Alternatively or additionally, the dataprocessing unit can comprise one or more application-specific integratedcircuits and/or one or more field-programmable gate arrays (FPGAs) orthe like.

The term “interface” as used here is a broad term which is intended tobe accorded its customary and familiar meaning as understood by a personskilled in the art. The term is not restricted to a specific or adaptedmeaning. The term can refer, without restriction, in particular to anelement or part of the optical measuring device that is configured totransmit information. The interface can be a communication interface, inparticular a data interface, configured to receive data from anotherdevice and/or from a user and/or to communicate data from the interfaceto further components of the optical measuring device and/or to externaldevices. The interface can comprise at least one electronic interfaceand/or a human-machine interface such as for example an input/outputdevice such as a display and/or a keyboard. The interface can compriseat least one data connection, for example a Bluetooth connection, an NFCconnection or another connection. The interface can comprise at leastone network or be part of a network. The interface can comprise at leastone Internet port, at least one USB port, at least one drive or a webinterface.

The term “manipulation” as used here is a broad term which is intendedto be accorded its customary and familiar meaning as understood by aperson skilled in the art. The term is not restricted to a specific oradapted meaning. The term can refer, without restriction, in particularto influencing, for example adapting and/or changing, the imagerecording position and/or at least one image recording parameter. Themanipulation can be effected by the user. The term “manipulationinformation” as used here is a broad term which is intended to beaccorded its customary and familiar meaning as understood by a personskilled in the art. The term is not restricted to a specific or adaptedmeaning. The term can refer, without restriction, in particular toinformation concerning the influencing of the image recording positionand/or the image recording parameter. The manipulation information cancomprise for example information about a size and/or scaling and/ortranslation and/or rotation and/or torsion of at least one image to berecorded. The manipulation information can comprise for exampleinformation about a change of an image recording position of at leastone image to be recorded. The interface can be configured to give theuser the opportunity to manipulate the schematic representations. Theinterface can be a human-machine interface. The manipulation informationcan be able to be input by a user via the interface.

The display device and/or the interface can be configured to display tothe user and/or to make available to the user for selection possiblemanipulations, such as adapting the size and/or scaling and/ortranslation and/or rotation and/or torsion. All possible manipulationscan be displayed and/or made available for selection. Alternatively,just one or a few manipulations can be offered. By way of example, it ispossible for a manipulation of the zoom not to be displayed and/or madeavailable for selection, even if the optical sensor supports this.

The optical measuring device can be configured to the effect that theimage recording parameters and/or image recording positions can bemanipulated only in a limited way. By way of example, the imagerecording position and/or the image recording parameter can be adaptablewithin a range predefined by a measurement strategy.

At least one of the schematically represented images can have a specificproperty. The data processing unit can be configured to the effect thatif the user removes the image, the data processing unit passes on thisproperty to another of the schematically represented images. By way ofexample, it may be necessary to set the correct recording distancebefore the measurement of a measurement element by means of autofocus.The autofocus is performed only at a location in the measurementstrategy, for example usually in the center of the first image recordingposition. In the event of the image being removed, the autofocus can becarried out at a different position. Equally, for example, an automaticsetting of the illumination can be carried out.

The data processing unit is configured to adapt the image recordingposition and/or at least one image recording parameter of at least oneof the images to be recorded depending on the manipulation information.The term “adapting” as used here is a broad term which is intended to beaccorded its customary and familiar meaning as understood by a personskilled in the art. The term is not restricted to a specific or adaptedmeaning. The term can refer, without restriction, in particular to achanging and/or setting and/or determining. Adapting the image recordingposition can comprise removing the image recording position or addingthe image recording position and/or displacing the image recordingposition. The image recording positions and/or the image recordingparameters of the images to be recorded which are representedschematically by the display device can be adapted individually. Theimage recording positions and/or the image recording parameters of atleast two schematically represented images to be recorded can beadaptable. The respective image recording position and/or the respectiveimage recording parameter of the images to be recorded can be adaptableindividually and/or independently of one another. The image recordingposition and/or the image recording parameter of all schematicallyrepresented images to be recorded can be adaptable, in particularsuccessively. The image recording position and/or the image recordingparameter for at least one of the images to be recorded can be adaptableindependently of the image recording positions and/or the imagerecording parameters of the other images. The optical measuring devicecan be configured to the effect that the image recording position and/orthe image recording parameter of at least one of the images to berecorded is manipulation-protected. By way of example, the algorithm fordetermining the image recording positions could protect specific imagesor specific properties of individual images against alterations becausethey are absolutely necessary for a correct implementation of the chosenmeasurement strategy.

The display device and/or the interface can be configured to passtowards the outside information regarding which image recording positionand/or which image recording parameter were/was altered, such thatanother part of the optical measuring device and/or of a coordinatemeasuring machine comprising the optical measuring device and/or of anindustrial robot and/or of a microscope comprising the optical measuringdevice can account for this information. By way of example, duringrenewed execution of the algorithm for determining the image recordingpositions, in order to be able to implement the chosen measurementstrategy, the altered image recording position and/or the altered imagerecording parameter could be left unaltered.

The display device can be configured to display a schematicrepresentation of the images to be recorded with an adapted imagerecording position and/or an adapted image recording parameter. Thedisplay device can be configured to mark in each case the schematicrepresentation of the images to be recorded with an adapted imagerecording position and/or an adapted image recording parameter. Thedisplay device can be configured to mark in a different way images to berecorded with overlapping image recording regions.

In one embodiment, the optical sensor can be a three-dimensional opticalsensor and/or comprise at least one three-dimensional optical sensor.The schematic representation can comprise a representation of the entirerecording region of the optical sensor in the 3D scene, for example aparallelepiped, in the case of a telecentric optical sensor, or atruncated pyramid in the case of a non-telecentric optical sensor. Aside of this body that faces the optical sensor can be positioned at aminimum working distance and a side facing away can be positioned at themaximum working distance of the sensor. Alternatively or additionally, asimplification of the schematic representation can also comprise arepresentation corresponding to the case of a two-dimensional opticalsensor. The schematic representation can be positioned at a specificpoint within the measurement range of the three-dimensional opticalsensor, for example the average working distance or any other typicalworking distance.

In a further aspect, a device for dimensional measurement of ameasurement object is proposed. The dimensional measurement can comprisea determination of at least one property of the measurement objectand/or of a part of the measurement object, such as a measurement ofdiameter, length, distance, shape and position.

The device can be a coordinate measuring machine, an industrial robot ora microscope. The device comprises at least one optical measuring deviceaccording to the invention according to any of the preceding embodimentsdescribed or any further embodiment described below. For details andembodiments with regard to the device, reference is made to thedescription of the optical measuring device according to the invention.

The coordinate measuring machine can be a gantry-type measuring machineor a bridge-type measuring machine. The coordinate measuring machine canhave a measuring table on which to place at least one object to bemeasured. The coordinate measuring machine can comprise at least onegantry which comprises at least one first vertical column, at least onesecond vertical column and a cross beam which connects the firstvertical column and the second vertical column. At least one verticalcolumn selected from the first and second vertical columns can bemounted so as to be movable on the measuring table. The horizontaldirection can be a direction along a y-axis. The coordinate measuringmachine can have a coordinate system, for example a Cartesian coordinatesystem or a spherical coordinate system. Other coordinate systems arealso conceivable. An x-axis can run perpendicular to the y-axis in aplane of the bearing surface of the measuring table. A z-axis, alsocalled longitudinal axis, can extend perpendicular to the plane of thebearing surface, in a vertical direction. The vertical columns canextend along the z-axis. The cross beam can extend along the x-axis. Thecoordinate measuring machine can have at least one measuring slide whichis mounted so as to be movable along the cross beam. A measuring slidecan be understood generally to mean a slide which is configured toaccommodate at least one sensor device directly or via furthercomponents. In the measuring slide there can be mounted a sleeve whichis movable in a vertical direction, for example along the z-axis. Theoptical sensor, for example, can be arranged at a lower end, inparticular an end facing in the direction of the bearing surface, of thesleeve. The optical sensor can be exchanged for a tactile sensor formeasurements in a different measuring mode. The sensors can be connectedto the device in an interchangeable manner.

In the case of a configuration of the device as a microscope, theoptical sensor can be configured as a microscope camera. The microscopecamera can comprise at least one illumination device configured togenerate an illumination light beam. The microscope camera can compriseat least one microscope optical unit configured to focus theillumination light beam and to generate at least one magnified image ofthe measurement object in at least one image plane. The microscopeoptical unit can comprise at least one lens element and/or alens-element system and/or an objective lens, in particular a zoomobjective lens. The microscope camera can be configured to record themagnified image.

In a further aspect, a method for creating a measurement program fordetermining at least one dimensional measurement of a measurement objectwith an optical sensor is proposed.

The method comprises the following steps:

a) providing a measurement strategy;

b) providing a plurality of predetermined and/or determinable imagerecording positions;

c) displaying in each case a schematic representation of an image to berecorded at the respective predetermined and/or determinable imagerecording position;

d) providing at least one item of manipulation information to a dataprocessing unit via at least one interface;

e) adapting the image recording position and/or at least one imagerecording parameter of at least one of the images to be recordeddepending on the manipulation information; and

f) creating the measurement program for recording images of themeasurement object with the optical sensor using the adapted imagerecording position and/or the adapted image recording parameter.

An optical measuring device according to the invention can be used inthe method. For details and embodiments with regard to the method,reference is made to the description of the optical measuring deviceaccording to the invention.

The method steps can be carried out in the order indicated, wherein oneor more of the steps can at least in part also be carried outsimultaneously and wherein one or more of the steps can be repeatedmultiply. Furthermore, further steps can additionally be performedindependently of whether or not they are mentioned in the presentapplication.

In a further aspect, a test method for determining at least onedimensional property of a measurement object is proposed. The method canbe used not only during programming but also when carrying out a testsequence. The image recording positions can be displayed schematicallyto the user, for example prior to the measurement. The user canmanipulate these positions as necessary and then start the measurement.These manipulations can either be stored for the following sequences orbe discarded.

The method comprises the following steps:

I) providing a plurality of predetermined and/or determinable imagerecording positions;

II) displaying in each case a schematic representation of an image to berecorded at the respective predetermined and/or determinable imagerecording position;

III) providing at least one item of manipulation information to a dataprocessing unit via at least one interface;

IV) adapting the image recording position and/or at least one imagerecording parameter of at least one of the images to be recordeddepending on the manipulation information;

V) recording a plurality of images of the measurement object with atleast one optical sensor taking account of the adapted image recordingpositions and/or the adapted image recording parameter.

An optical measuring device according to the invention can be used inthe method. For details and embodiments with regard to the method,reference is made to the description of the optical measuring deviceaccording to the invention.

The method steps can be carried out in the order indicated, wherein oneor more of the steps can at least in part also be carried outsimultaneously and wherein one or more of the steps can be repeatedmultiply. Furthermore, further steps can additionally be performedindependently of whether or not they are mentioned in the presentapplication.

Furthermore, in the context of the present invention, a computer programis proposed which, when executed on a computer or a computer network,carries out at least one of the methods according to the invention inone of its configurations, in particular method steps a) to f) of themethod for creating a measurement program for determining at least onedimensional measurement of a measurement object and/or method steps I)to V) of the test method.

Furthermore, in the context of the present invention, a computer programcomprising program code means is proposed for carrying out the methodsaccording to the invention in one of their configurations when theprogram is executed on a computer or computer network. In particular,the program code means can be stored on a computer-readable data medium.

The terms “computer-readable data medium” and “computer-readable storagemedium” as used here can refer in particular to non-transitory datastorage media, for example a hardware data storage medium on whichcomputer-executable instructions are stored. The computer-readable datamedium or the computer-readable storage medium can be or comprise, inparticular, a storage medium such as a Random Access Memory (RAM) and/ora Read Only Memory (ROM).

Moreover, in the context of the present invention, a data medium isproposed on which is stored a data structure which, after being loadedinto a random access memory and/or main memory of a computer or computernetwork, can carry out the methods according to the invention in one oftheir configurations.

Moreover, in the context of the present invention, a computer programproduct comprising program code means stored on a machine-readablecarrier is proposed for carrying out the methods according to theinvention in one of their configurations when the program is executed ona computer or computer network.

A computer program product is understood to mean the program as atradable product. In principle, it can be available in any form, forexample on paper or on a computer-readable data medium, and, inparticular, it can be distributed via a data transmission network.

Finally, in the context of the present invention, a modulated datasignal is proposed which contains instructions executable by a computersystem or computer network for the purpose of carrying out a methodaccording to any of the embodiments described.

With regard to the computer-implemented aspects of the invention, one, aplurality or even all of the method steps of the methods in accordancewith one or more of the configurations proposed here can be carried outby means of a computer or computer network. Consequently, in general,any of the method steps, including the provision and/or manipulation ofdata, can be carried out by means of a computer or computer network. Ingeneral, these steps can comprise any of the method steps, excluding thesteps that require manual work, for example the provision of workpiecesand/or specific aspects of carrying out actual measurements.

The proposed devices and methods have numerous advantages over knowndevices and methods. In this regard, the proposed devices and methodscan enable user-adaptable and thereby improved image recording. Furtheradvantages may include making it possible to optimize overlaps ofmeasurement images and thus to optimize the measurement strategy, eitherfor the reduction of image recordings per se and thus for the reductionof measurement times or for the targeted increase of image recordingsfor the purpose of multiple coverage of specific regions of themeasurement object. Furthermore, the user can obtain information aboutthe imminent measurement time of the imminent measurement and/or aboutthe imminent arising of the data volume of the measurement. Collisionavoidance, particularly in difficult cases, e.g. when there is littlespace in the measurement region, can be possible.

In summary, in the context of the present invention, the followingembodiments are particularly preferred:

Embodiment 1: Optical measuring device comprising:

at least one optical sensor configured for optical capture of at leastone measurement object at a plurality of image recording positions;

at least one display device configured to display for a plurality ofpredetermined and/or determinable image recording positions in each casea schematic representation of an image to be recorded at the respectiveimage recording position;

at least one data processing unit and at least one interface, whereinthe interface is configured to provide at least one item of manipulationinformation to the data processing unit, wherein the data processingunit is configured to adapt the image recording position and/or at leastone image recording parameter of at least one of the images to berecorded depending on the manipulation information.

Embodiment 2: Optical measuring device according to the precedingembodiment, wherein the image recording positions and/or the imagerecording parameters of at least two schematically represented images tobe recorded are adaptable, wherein the respective image recordingposition and/or the respective image recording parameter of the imagesto be recorded is adaptable individually and/or independently of oneanother.

Embodiment 3: Optical measuring device according to any one of thepreceding embodiments, wherein the image recording position and/or theimage recording parameter of all the images to be recorded is adaptable.

Embodiment 4: Optical measuring device according to any one of thepreceding embodiments, wherein the image recording position and/or theimage recording parameter for at least one of the images to be recordedis adaptable independently of the image recording positions and/or theimage recording parameters of the other images.

Embodiment 5: Optical measuring device according to any one of thepreceding embodiments, wherein the optical measuring device isconfigured to the effect that the image recording position and/or theimage recording parameter of at least one of the images to be recordedis manipulation-protected.

Embodiment 6: Optical measuring device according to any one of thepreceding embodiments, wherein the interface is a human-machineinterface, wherein the manipulation information is able to be input by auser via the interface.

Embodiment 7: Optical measuring device according to any one of thepreceding embodiments, wherein adapting the image recording positioncomprises removing the image recording position or adding the imagerecording position and/or displacing the image recording position.

Embodiment 8: Optical measuring device according to any one of thepreceding embodiments, wherein the image recording parameter comprisesat least one parameter selected from the group consisting of: size,scaling, translation, rotation, torsion.

Embodiment 9: Optical measuring device according to the precedingembodiment, wherein the image recording parameter comprises at least oneparameter of at least one setting such as an illumination control, forexample of a bright field, dark field, transmitted-light and/or coaxialillumination, and/or of a camera such as, for example, exposure timeand/or aperture setting.

Embodiment 10: Optical measuring device according to any one of thepreceding embodiments, wherein the image recording position and/or theimage recording parameter is adaptable within a range predefined by ameasurement strategy.

Embodiment 11: Optical measuring device according to any one of thepreceding embodiments, wherein the display device is configured todisplay a schematic representation of the images to be recorded with anadapted image recording position and/or an adapted image recordingparameter.

Embodiment 12: Optical measuring device according to the precedingembodiment, wherein the display device is configured to mark in eachcase the schematic representation of the images to be recorded with anadapted image recording position and/or an adapted image recordingparameter.

Embodiment 13: Optical measuring device according to any one of thepreceding embodiments, wherein the display device is configured to markin a different way images to be recorded with overlapping imagerecording regions.

Embodiment 14: Optical measuring device according to any one of thepreceding embodiments, wherein at least one measurement strategy isdeterminable via the interface.

Embodiment 15: Optical measuring device according to the precedingembodiment, wherein the optical measuring device is configured todetermine the image recording positions depending on the measurementstrategy.

Embodiment 16: Optical measuring device according to any one of thepreceding embodiments, wherein the image recording positions are able tobe input via the interface.

Embodiment 17: Optical measuring device according to any one of thepreceding embodiments, wherein the display device is configured todisplay the schematic representation of the images to be recordedschematically with a representation of a measurement space and/or with arepresentation of the measurement object and/or with a representation ofa measurement element.

Embodiment 18: Optical measuring device according to any one of thepreceding embodiments, wherein the optical sensor is a two- orthree-dimensional optical sensor.

Embodiment 19: Optical measuring device according to any one of thepreceding embodiments, wherein a relative position of the optical sensorand the measurement object is adjustable.

Embodiment 20: Device for dimensional measurement of a measurementobject, wherein the device is a coordinate measuring machine, anindustrial robot or a microscope, wherein the device comprises at leastone optical measuring device according to any one of the precedingembodiments.

Embodiment 21: Method for creating a measurement program for determiningat least one dimensional measurement of a measurement object with atleast one optical sensor, wherein the comprises the following steps:

a) providing a measurement strategy;

b) providing a plurality of predetermined and/or determinable imagerecording positions;

c) displaying in each case a schematic representation of an image to berecorded at the respective predetermined and/or determinable imagerecording position;

d) providing at least one item of manipulation information to a dataprocessing unit via at least one interface;

e) adapting the image recording position and/or at least one imagerecording parameter of at least one of the images to be recordeddepending on the manipulation information;

f) creating the measurement program for recording images of themeasurement object with the optical sensor using the adapted imagerecording position and/or the adapted image recording parameter.

Embodiment 22: Method according to the preceding embodiment, wherein anoptical measuring device according to any one of the precedingembodiments relating to an optical measuring device is used in themethod.

Embodiment 23: Test method for determining at least one dimensionalproperty of a measurement object, wherein the method comprises thefollowing steps:

I) providing a plurality of predetermined and/or determinable imagerecording positions;

II) displaying in each case a schematic representation of an image to berecorded at the respective predetermined and/or determinable imagerecording position;

III) providing at least one item of manipulation information to a dataprocessing unit via at least one interface;

IV) adapting the image recording position and/or at least one imagerecording parameter of at least one of the images to be recordeddepending on the manipulation information;

V) recording a plurality of images of the measurement object with atleast one optical sensor taking account of the adapted image recordingpositions and/or the adapted image recording parameter.

Embodiment 24: Method according to the preceding embodiment, wherein anoptical measuring device according to any one of the precedingembodiments relating to an optical measuring device is used in themethod.

Embodiment 25: Computer program, wherein the computer program, whenexecuted on a computer or computer network, carries out a method forcreating a measurement program according to any one of the precedingembodiments relating to a method for creating a measurement program, inparticular method steps a) to f) of the method, and/or a test methodaccording to any of the preceding embodiments relating to a test method,in particular method steps I) to V) of the test method.

Further areas of applicability of the present disclosure will becomeapparent from the detailed description, the claims, and the drawings.The detailed description and specific examples are intended for purposesof illustration only and are not intended to limit the scope of thedisclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

Further details and features will become apparent from the followingdescription of example embodiments, in particular in conjunction withthe dependent claims. In this case, the respective features can berealized by themselves or as a plurality in combination with oneanother. The invention is not restricted to the example embodiments. Theexample embodiments are illustrated schematically in the figures.Identical reference numerals in the individual figures denote identicalor functionally identical elements or elements corresponding to oneanother with regard to their functions.

FIG. 1 is a schematic illustration of a device according to theinvention for dimensional measurement of a measurement object with anoptical measuring device according to the principles of the presentdisclosure.

FIG. 2 is a flow diagram of a method for creating a measurement programfor determining at least one dimensional measurement of a measurementobject with at least one optical sensor.

DETAILED DESCRIPTION

FIG. 1 shows a schematic illustration of one embodiment of a device 110according to the invention for dimensional measurement of a measurementobject with an optical measuring device 112 according to the invention.The device 110 can be a coordinate measuring machine 111, as shown inFIG. 1, an industrial robot or a microscope.

The coordinate measuring machine 111 can be a gantry-type measuringmachine or a bridge-type measuring machine. The coordinate measuringmachine 111 can have a measuring table on which to place at least oneobject to be measured. The coordinate measuring machine 111 can have atleast one gantry which has at least one first vertical column, at leastone second vertical column and a cross beam which connects the firstvertical column and the second vertical column. The vertical columns canbe mounted moveably on the measuring table or be mounted moveably bymeans of connected guides.

The measurement object can be an arbitrarily shaped object to bemeasured. By way of example, the measurement object can be selected fromthe group consisting of a test object, a workpiece, and a component tobe measured. By way of example, the measurement object can be a planarmeasurement object, for example having an extensive surface.

The optical measuring device 112 comprises at least one optical sensor114 configured for optical capture of at least one measurement object ata plurality of image recording positions 116. The image recordingposition 116 can be a position of the optical sensor 114 at the time ofimage recording. The position can comprise a spatial position, inparticular a three-dimensional point (x, y, z) in a coordinate system,and/or an orientation of the optical sensor 114. The orientation can bespecified by at least three angles, for example an Euler angle orinclination angle, a roll angle and a yaw angle.

The optical sensor 114 can be configured to generate an imaging, alsocalled image, of a measurement object. The optical sensor 114 can be atwo- or three-dimensional optical sensor. By way of example, the opticalsensor 114 can be a two-dimensional image sensor. The optical sensor 114can comprise at least one camera sensor, for example at least one CCDcamera.

The optical measuring device 112 can comprise at least one evaluationunit 118 configured to evaluate the recorded image. The evaluation 118can comprise determining a position of at least one measurement pointrelative to a reference coordinate system. The evaluation unit 118 canbe part of a data processing unit 120 of the optical measuring device112. The data processing unit 120 can have one or more volatile and/ornon-volatile data memories, wherein the data processing unit 120 can beconfigured for example in terms of programming to evaluate the image.The data processing unit 120 can comprise a processor or a processorunit, for example at least one microprocessor. The evaluation unit 118can furthermore comprise at least one interface, for example anelectronic interface and/or a human-machine interface such as, forexample, an input/output device such as a display and/or a keyboard. Byway of example, one or more electronic connections between the opticalsensor 114 and the evaluation unit 118 can be provided.

The optical measuring device 112 can be configured to determine and/orto check at least one test feature of the measurement object. The testfeature can be and/or comprise a feature that is to be determined and/orto be checked and/or to be tested of at least one measurement element122. Determining and/or checking can comprise determining and/orchecking dimensional deviations and/or shape deviations and/orpositional deviations. The test feature can be a feature selected fromthe group consisting of: at least one length; at least one angulardimension, at least one surface parameter, a shape, a position. Themeasurement element 122 can be a predetermined or predeterminablegeometric element. The measurement element 122 can be for example ageometric element selected from the group consisting of a circle, acylinder, a rectangle, a straight line or another element with a regulargeometry. The test feature can be determined and/or checked for exampleby measuring points and/or lines and/or areas of the measurement object.The optical measuring device 112 can be configured to record a pluralityof images at different image recording positions 116 for the purpose ofdetermining and/or checking the test feature. The recorded images can beevaluated by the evaluation unit 118 and in each case at least onemeasurement point can be determined.

The test feature can be determined and/or checked using a measurementstrategy. The measurement strategy comprises at least one capturestrategy which determines the image recording, in particular imagerecording positions 116.

The measurement strategy can be defined by a user of the opticalmeasuring device 112. The optical measuring device 112 comprises atleast one interface 124. The measurement strategy can be determinablevia the interface 124. By way of example, the interface 124 can be ahuman-machine interface and the measurement strategy can be determinedvia the human-machine interface. Prior to the measurement the user candetermine a measurement element 122, for example by selecting ameasurement element 112 from a database, and define the measurementstrategy.

The optical measuring device 112 can be configured to determine theimage recording positions 116 depending on the measurement strategy. Theimage recording position 116 can be an image recording position that ispreprogramed for a chosen measurement strategy. The optical measuringdevice 112, in particular the data processing unit 120 or a furtherprocessor of the optical measuring device 112, can be configured toexecute an algorithm for determining the image recording positions 116in order to be able to implement the chosen measurement strategy.Alternatively, the optical measuring device 112 can be configured to theeffect that the user himself/herself can choose the image recordingpositions 116. The image recording positions 116 can be able to be inputvia the interface 124.

A relative position of the optical sensor 114 and of the measurementobject can be adjustable. By way of example, a multiplicity of relativepositions of the optical sensor 114 and of the measurement object can beadjustable for the purpose of recording the plurality of measurementpoints. By way of example, the optical sensor 114 can be moveable, forexample in at least three spatial directions. By way of example, theoptical sensor 114 can be displaceable and the measurement object canlie on a fixed or moveable support. Embodiments with a fixed opticalsensor 114 are also conceivable, wherein the measurement object can thenbe displaced in these embodiments.

A relative movement of optical sensor 114 and measurement object can becontrolled by an apparatus controller 126 of the optical measuringdevice 112 and/or an external apparatus controller. The relativemovement of optical sensor 114 and measurement object can be determinedby a measurement program. By way of example, a measurement program thatcan be converted into control commands for the apparatus controller 126can be provided for a measurement of the measurement object. Themeasurement program can be dependent on the measurement strategy, themeasurement element and the test feature to be determined and/or to betested. The apparatus controller can be part of the data processing unit120.

The optical measuring device 112 comprises at least one display device128 configured to display for a plurality of predetermined and/ordeterminable image recording positions 116 in each case a schematicrepresentation 130 of an image to be recorded at the respective imagerecording position 116. The display device 128 can be an arbitrarydevice for optical visualization. The display device 128 can comprisefor example a display and/or a monitor and/or an augmented reality (AR)device and/or a virtual reality (VR) device.

The schematic representation 130 can be a representation of an imagecalculated, in particular by the data processing unit. The schematicrepresentation 130 can be for example a frame and/or a contour and/oroutline of the image. The schematic representation 130 can be such thatthe respective image recording position 116 defines the center point ofthe schematic representation 130. The display device 128 can beconfigured to display the schematic representation 130 positionallycorrectly. The display device 128 can be configured to display theschematic representation 130 of the images to be recorded schematicallywith a representation of a measurement space and/or with arepresentation of the measurement object and/or, as shown in FIG. 1,with a representation of a measurement element 122. By way of example,the optical sensor 114 and/or a further image sensor of the opticalmeasuring device 112 can be configured to record an overview image ofthe measurement space and/or of the measurement object. The displaydevice 128 can be configured to superimpose the schematic representation130 on the overview image. By way of example, a measurement task mightconsist in images of objects in the measurement space being intended tobe produced, in particular for documentation purposes. The images can beproduced at different image recording positions 116, which can bevisualized by the display device 128 as a schematic representation 130and can be manipulated by the user.

The optical measuring device 112 comprises at least one data processingunit 120 and the at least one interface 124. The interface 124 isconfigured to provide at least one item of manipulation information tothe data processing unit 120. The data processing unit 120 is configuredto adapt the image recording position and/or at least one imagerecording parameter of at least one of the images to be recordeddepending on the manipulation information.

The data processing unit 120 can comprise a processor or a processorunit. The data processing unit 120 can comprise for example anarithmetic-logic unit (ALU), a floating-point unit (FPU), such as amathematical coprocessor or numerical coprocessor, a plurality ofregisters and a main memory, for example a cache main memory. The dataprocessing unit 120 can comprise a multicore processor. The dataprocessing unit 120 can comprise a central processing unit (CPU).Alternatively or additionally, the data processing unit 120 can compriseone or more application-specific integrated circuits and/or one or morefield-programmable gate arrays (FPGAs) or the like.

The interface 124 can be a communication interface, in particular a datainterface, configured to receive data from another device and/or from auser and/or to communicate data from the interface 124 to furthercomponents of the optical measuring device 112 and/or to externaldevices. The interface 124 can comprise at least one electronicinterface and/or a human-machine interface such as for example aninput/output device such as a display and/or a keyboard. The interfacecan have at least one data connection, for example a Bluetoothconnection, an NFC connection or another connection. The interface 124can have at least one network or be part of a network. The interface 124can have at least one Internet port, at least one USB port, at least onedrive or a web interface.

The manipulation of the schematic representation 120 can compriseinfluencing, for example adapting and/or changing, the image recordingposition 116 and/or at least one image recording parameter. Manipulationcan be effected by the user. The image recording parameter can be anarbitrary property and/or a feature of the image and/or a setting of theoptical sensor 114 and/or of a further component of the opticalmeasuring device 112, such as a lens. The image recording parameter cancomprise at least one parameter selected from the group consisting of:size, scaling, translation, rotation, torsion. Such parameters can bedetermined by settings of the optical sensor 114 and/or of a furthercomponent of the optical measuring device 112, such as a lens, forexample a zoom setting. The image recording parameter can comprise atleast one parameter of at least one setting such as an illuminationcontrol, for example of a bright field, dark field, transmitted-lightand/or coaxial illumination, and/or of a camera such as, for example,exposure time and/or aperture setting. The image recording parameterscan also comprise settings of further constituent parts, connected to acontrol unit, for example of the coordinate measuring machine 111, suchas, for example, an illumination control, for example bright field, darkfield, transmitted-light and/or coaxial illumination, and cameraparameters such as, for example, exposure time and aperture setting.

The manipulation information can comprise information concerning theinfluencing of the image recording position and/or of the imagerecording parameter. The manipulation information can comprise forexample information about a size and/or scaling and/or translationand/or rotation and/or torsion of at least one image to be recorded. Themanipulation information can comprise for example information about achange of an image recording position 116 of at least one image to berecorded. The interface 124 can be configured to give the user theopportunity to manipulate the schematic representations. The interface124 can be a human-machine interface. The manipulation information canbe able to be input by a user via the interface 124.

The display device 128 and/or the interface 124 can be configured todisplay to the user and/or to make available to the user for selectionpossible manipulations, such as adapting the size and/or scaling and/ortranslation and/or rotation and/or torsion. All possible manipulationscan be displayed and/or made available for selection. Alternatively,just one or a few manipulations can be offered. By way of example, it ispossible for a manipulation of the zoom not to be displayed and/or madeavailable for selection, even if the optical sensor 114 supports this.

The optical measuring device 112 can be configured to the effect thatthe image recording parameters and/or image recording positions 116 canbe manipulated only in a limited way. By way of example, the imagerecording position 116 and/or the image recording parameter can beadaptable within a range predefined by a measurement strategy.

At least one of the schematically represented images can have a specificproperty. By way of example, it may be necessary to set the correctrecording distance before the measurement of a measurement element 122by means of autofocus. The autofocus is performed only at a location inthe measurement strategy, for example usually in the center of the firstimage recording position. In the event of the image being removed, theautofocus can be carried out at a different position. Equally, forexample, an automatic setting of the illumination can be carried out.The data processing unit 120 can be configured to the effect that if theuser removes the image, the data processing unit passes on this propertyto another of the schematically represented images.

The data processing unit 120 is configured to adapt the image recordingposition and/or at least one image recording parameter of at least oneof the images to be recorded depending on the manipulation information.Adapting the image recording position 116 can comprise removing theimage recording position 116 or adding the image recording position 116and/or displacing the image recording position 116. The image recordingpositions 116 and/or the image recording parameters of the images to berecorded which are represented schematically by the display device 128can be adapted individually. The image recording positions 116 and/orthe image recording parameters of at least two schematically representedimages to be recorded can be adaptable. The respective image recordingposition 116 and/or the respective image recording parameter of theimages to be recorded can be adaptable individually and/or independentlyof one another. The image recording position 116 and/or the imagerecording parameter of all schematically represented images to berecorded can be adaptable, in particular successively. The imagerecording position 116 and/or the image recording parameter for at leastone of the images to be recorded can be adaptable independently of theimage recording positions 116 and/or the image recording parameters ofthe other images. The optical measuring device 112 can be configured tothe effect that the image recording position 116 and/or the imagerecording parameter of at least one of the images to be recorded ismanipulation-protected. By way of example, the algorithm for determiningthe image recording positions 116 could protect specific images orspecific properties of individual images against alterations becausethey are absolutely necessary for a correct implementation of the chosenmeasurement strategy.

The display device 128 and/or the interface 124 can be configured topass towards the outside information regarding which image recordingposition 116 and/or which image recording parameter were/was altered,such that another part of the optical measuring device 112 and/or of thedevice 110 comprising the optical measuring device 112 can account forthis information. By way of example, during renewed execution of thealgorithm for determining the image recording positions 116, in order tobe able to implement the chosen measurement strategy, the altered imagerecording position 116 and/or the altered image recording parametercould be left unaltered.

The display device 128 can be configured to display a schematicrepresentation 130 of the images to be recorded with an adapted imagerecording position and/or an adapted image recording parameter. Thedisplay device 128 can be configured to mark in each case the schematicrepresentation of the images to be recorded with an adapted imagerecording position and/or an adapted image recording parameter. Thedisplay device 128 can be configured to mark in different way images tobe recorded with overlapping image recording regions.

FIG. 2 shows a flow diagram of a method for creating a measurementprogram for determining at least one dimensional measurement of ameasurement object with the optical sensor 114. The method comprises thefollowing steps:

a) (reference numeral 132) providing a measurement strategy;

b) (reference numeral 134) providing a plurality of predetermined and/ordeterminable image recording positions 116;

c) (reference numeral 136) displaying in each case a schematicrepresentation 130 of an image to be recorded at the respectivepredetermined and/or determinable image recording position 116;

d) (reference numeral 138) providing at least one item of manipulationinformation to the data processing unit 120 via the at least oneinterface 124;

e) (reference numeral 140) adapting the image recording position 116and/or at least one image recording parameter of at least one of theimages to be recorded depending on the manipulation information;

f) (reference numeral 142) creating the measurement program forrecording images of the measurement object with the optical sensor 114using the adapted image recording position and/or the adapted imagerecording parameter.

An optical measuring device 112 according to the invention can be usedin the method. For details and embodiments with regard to the method,reference is made to the description of the optical measuring device 112according to the invention in FIG. 1.

In the drawings, reference numbers may be reused to identify similarand/or identical elements.

-   110 Device-   111 Coordinate measuring machine-   112 Optical measuring device-   114 Optical sensor-   116 Image recording positions-   118 Evaluation unit-   120 Data processing unit-   122 Measurement element-   124 Interface-   126 Apparatus controller-   128 Display device-   130 Schematic representation of the image recording position 116-   132 Method step a)-   134 Method step b)-   136 Method step c)-   138 Method step d)-   140 Method step e)-   142 Method step f)

What is claimed is:
 1. An optical measuring device comprising: at leastone optical sensor configured for optical capture of at least onemeasurement object at a plurality of image recording positions; at leastone display device configured to display for a plurality ofpredetermined and/or determinable image recording positions in each casea schematic representation of an image to be recorded at the respectiveimage recording position; and at least one data processing unit and atleast one interface, wherein: the interface is configured to provide atleast one item of manipulation information to the data processing unit,and the data processing unit is configured to, based on the manipulationinformation, adapt at least one of the image recording position and animage recording parameter of at least one of the images to be recorded.2. The optical measuring device of claim 1 wherein: the image recordingpositions and/or the image recording parameters of at least twoschematically represented images to be recorded are adaptable; and therespective image recording position and/or the respective imagerecording parameter of the images to be recorded is adaptableindividually and/or independently of one another.
 3. The opticalmeasuring device of claim 1 wherein the optical measuring device isconfigured such that the image recording position and/or the imagerecording parameter of at least one of the images to be recorded ismanipulation-protected.
 4. The optical measuring device of claim 1wherein: the interface is a human-machine interface; and the interfaceis configured to receive the manipulation information from a user. 5.The optical measuring device of claim 1 wherein the image recordingparameter comprises a parameter selected from the group consisting ofsize, scaling, translation, rotation, and torsion.
 6. The opticalmeasuring device of claim 1 wherein the image recording parametercomprises an illumination control parameter.
 7. The optical measuringdevice of claim 6 wherein values for the illumination control parameterspecify, respectively, a bright field, a dark field, transmitted-light,and coaxial illumination.
 8. The optical measuring device of claim 1wherein the image recording parameter comprises a camera parameter. 9.The optical measuring device of claim 8 wherein the camera parameterspecifies at least one of exposure time and aperture.
 10. The opticalmeasuring device of claim 1 wherein the display device is configured todisplay a schematic representation of the images to be recorded with anadapted image recording position and/or an adapted image recordingparameter.
 11. The optical measuring device of claim 1 wherein thedisplay device is configured to mark in each case the schematicrepresentation of the images to be recorded with an adapted imagerecording position and/or an adapted image recording parameter.
 12. Theoptical measuring device of claim 1 wherein a measurement strategy isdeterminable via the interface.
 13. The optical measuring device ofclaim 12 wherein the optical measuring device is configured to determinethe image recording positions depending on the measurement strategy. 14.The optical measuring device of claim 1 wherein the image recordingpositions are able to be input via the interface.
 15. The opticalmeasuring device of claim 1 wherein the display device is configured todisplay the schematic representation of the images to be recordedschematically with at least one of: a representation of a measurementspace; a representation of the measurement object; and a representationof a measurement element.
 16. A device for dimensional measurement of ameasurement object, the device comprising: the optical measuring deviceof claim 1, wherein the device is at least one of a coordinate measuringmachine, an industrial robot, and a microscope.
 17. A method forcreating a measurement program for determining at least one dimensionalmeasurement of a measurement object with at least one optical sensor,the method comprising: providing a measurement strategy; providing aplurality of predetermined and/or determinable image recordingpositions; displaying in each case a schematic representation of animage to be recorded at the respective predetermined and/or determinableimage recording position; providing at least one item of manipulationinformation to a data processing unit via at least one interface; basedon the manipulation information, adapting the image recording positionand/or at least one image recording parameter of at least one of theimages to be recorded; and creating the measurement program forrecording images of the measurement object with the optical sensor usingthe adapted image recording position and/or the adapted image recordingparameter.
 18. A test method for determining at least one dimensionalproperty of a measurement object, the method comprising: providing aplurality of predefined and/or predeterminable image recordingpositions; displaying in each case a schematic representation of animage to be recorded at the respective predetermined and/orpredeterminable image recording position; providing at least one item ofmanipulation information to a data processing unit via at least oneinterface; based on the manipulation information, adapting the imagerecording position and/or at least one image recording parameter of atleast one of the images to be recorded; and recording a plurality ofimages of the measurement object with at least one optical sensor takingaccount of the adapted image recording positions and/or the adaptedimage recording parameter.